CN205629844U - Device is changed to furnace for brightness cooler - Google Patents
Device is changed to furnace for brightness cooler Download PDFInfo
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- CN205629844U CN205629844U CN201620386905.1U CN201620386905U CN205629844U CN 205629844 U CN205629844 U CN 205629844U CN 201620386905 U CN201620386905 U CN 201620386905U CN 205629844 U CN205629844 U CN 205629844U
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- cooler
- workbench
- elevating lever
- changing device
- brightness
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Abstract
The utility model provides a device is changed to furnace for brightness cooler should change the device and include the base and install a plurality of wheels in base below, and the base top is equipped with lift platform, is equipped with elevating system between lift platform and the base, and lift platform passes through elevating system control height, and the last workstation that is fixed with of lift platform is equipped with the connecting block that can be connected with the cooler on, and the connecting block slides on the workstation under connecting block control mechanism's control. This device is changed to furnace for brightness cooler uses the isolated plant to change the cooler, makes the cooler change the use that driving, jack had been broken away from in the operation, and the operation personnel reduce substantially, and the security increases substantially.
Description
Technical field
This utility model relates to a kind of furnace for brightness cooler more changing device.
Background technology
The precision tube plant of steel pipe Tiao Gang division department of Baogang Stocks Trading Co. is the equipment in the sixties in last century five, in 2010 from upper
Area, south, the river in Jiangsu Province which flows into the Huangpu River of Shanghai, Hypon mountain area resettlement most valuable treasure steel on-site, is constructed and put into operation for 2012 again.The pass of furnace for brightness Chan Xianshi precision tube factory
Key produces one of line.Precision tube factory, shutdown maintenance construction furnace for brightness being produced to line is paid much attention to, it is desirable to overhaul unit can be
Requiring to overhaul equipment and safeguard according to spot check in the shortest time, this just proposes the highest requirement to upkeep operation personnel.
Project changed by cooler is the key project in furnace for brightness maintenance repair.Consulting precision tube factory spot check, production, technology etc.
Related personnel, the maintenance of current cooler is changed, and does not has specific purpose tool or common apparatus.The dismounting of cooler, generally uses driving
Coordinating lifting, during cooler turnover furnace for brightness, the form being added jack by manpower " is transported and is transported ", during turnover stove,
Multiple stage jack is needed to coordinate, it is ensured that cooler keeps balance.Particularly 3# line, near the production facility such as electric panel room, narrow space,
During using driving lifting cooler, cooler " passes in and out " furnace for brightness can produce jam, the phenomenons such as electric panel room metope of colliding with,
Easily cause installations and facilities to damage, the most easily injure operating personnel.
Utility model content
The shortcoming of prior art in view of the above, the purpose of this utility model is to provide a kind of furnace for brightness cooler more changing device,
For solving because lacking the cooler more changing device of specialty in prior art, cooler Renewal process is wasted time and energy, and is easily caused
Device damage and the problem of personnel's injury.
For achieving the above object and other relevant purposes, this utility model provides a kind of furnace for brightness cooler more changing device, and it includes
Base and be arranged on the multiple wheels below base, base is arranged over hoistable platform, is provided with lifting between hoistable platform and base
Mechanism, hoistable platform controls height by elevating mechanism, hoistable platform is fixed with workbench, and workbench is provided with can be with cooling
The contiguous block that device connects, contiguous block slides under the control of contiguous block controlling organization on the table.
Preferably, elevating mechanism includes intersecting and two elevating levers hinged in cross point, two ends of each elevating lever
Being connected with hoistable platform, base respectively, the spacing between hoistable platform, base is along with the change of the angle between two elevating levers
And change.
Preferably, elevating mechanism includes cross one another first elevating lever and the second elevating lever, the first elevating lever, the second elevating lever
Hinged by jointed shaft in intersection；The lower surface of hoistable platform is provided with the upper slide rails vertical with jointed shaft, the first elevating lever
One end hinged with the upper surface of base, the other end of the first elevating lever slides in upper slide rails；The upper surface of base be provided with
The lower slide rails that jointed shaft is vertical, one end of the second elevating lever is hinged with the lower surface of hoistable platform, the other end of the second elevating lever
Slide in lower slide rails；Second elevating lever is also hinged with one end of lifting hydraulic cylinder, the other end of lifting hydraulic cylinder and transition block
Hinged, transition block is also enclosed within jointed shaft.
Preferably, contiguous block controlling organization includes the contiguous block guide rail being positioned at the upper surface of workbench, and contiguous block is at contiguous block guide rail
Interior slip, at least screw mandrel being also arranged above axis and contiguous block guide rail parallel of workbench, contiguous block is enclosed within screw mandrel also
Being connected with wire rod thread, screw mandrel is connected with driving motor, drives driven by motor screw mandrel to be rotated about axis.
Preferably, it is additionally provided with between multiple wheels for controlling the wheel controlling organization that wheel advances, steps back and turn to.
Preferably, workbench includes the canned paragraph fixing with hoistable platform and can stretch along the bearing of trend of the upper surface of workbench
Telescopic section, telescopic section is stretched out in canned paragraph under the driving of workbench hydraulic cylinder, or is retracted to the inside of canned paragraph.
Preferably, more changing device also includes connecting rod, and one end of connecting rod removably connects with contiguous block, the other end of connecting rod
Removably connect with cooler.
Preferably, more changing device also includes at least one spike, and a spike is fixed on the periphery of base, and a spike is supporting liquid
Ground can be extended downward under the driving of cylinder pressure.
As it has been described above, this utility model furnace for brightness cooler more changing device, have the advantages that
This furnace for brightness cooler more changing device, use special purpose device change cooler, make cooler change operation broken away from driving,
The use of jack, operating personnel is greatly reduced, and safety increases substantially.
Accompanying drawing explanation
Fig. 1 is shown as the workbench of this utility model furnace for brightness cooler more changing device and is positioned at the schematic diagram of lower.
Fig. 2 is shown as the workbench of the furnace for brightness cooler more changing device shown in Fig. 1 and is positioned at the schematic diagram of eminence.
Fig. 3 and Fig. 4 is shown as the furnace for brightness cooler more changing device shown in Fig. 1 and is positioned at the schematic diagram that cooler is other.
Element numbers explanation
1 base
2 wheels
3 hoistable platforms
4 elevating mechanisms
41 first elevating levers
42 second elevating levers
43 jointed shafts
44 upper slide rails
45 lower slide rails
46 lifting hydraulic cylinders
461 cylinder bodies
462 piston rods
47 transition block
5 workbench
51 canned paragraphs
52 telescopic sections
6 coolers
7 contiguous blocks
8 contiguous block controlling organizations
81 screw mandrels
82 drive motor
83 reduction boxes
84 first sprocket wheels
85 second sprocket wheels
86 chains
9 wheel controlling organizations
91 action bars
10 connecting rods
101 adpting flanges
11 spikes
12 supporting cylinders
Detailed description of the invention
By particular specific embodiment, embodiment of the present utility model being described below, those skilled in the art can be by this specification
Disclosed content understands other advantages of the present utility model and effect easily.
Refer to Fig. 1 to Fig. 4.It should be clear that structure depicted in this specification institute accompanying drawings, ratio, size etc., the most only in order to
Coordinating the content disclosed in description, understand for those skilled in the art and read, being not limited to this utility model can
The qualifications implemented, therefore do not have technical essential meaning, the modification of any structure, the change of proportionate relationship or the tune of size
Whole, under not affecting effect that this utility model can be generated by and the purpose that can reach, all should still fall and be taken off at this utility model
In the range of the technology contents shown can be contained.Meanwhile, in this specification cited as " on ", D score, "left", "right", " in
Between " and the term of " " etc., it is merely convenient to understanding of narration, and is not used to limit the enforceable scope of this utility model, its phase
Relation is altered or modified, is changing under technology contents without essence, when being also considered as the enforceable category of this utility model.
As shown in Figure 1 to Figure 2, this utility model provides a kind of furnace for brightness cooler more changing device, and it includes base 1 and installs
Multiple wheels 2 below base 1, base 1 is arranged over hoistable platform 3, is provided with lifting between hoistable platform 3 and base 1
Mechanism 4, hoistable platform 3 controls height by elevating mechanism 4, hoistable platform 3 is fixed with workbench 5, workbench 5 sets
Having the contiguous block 7 being connected with cooler 6, contiguous block 7 slides under the control of contiguous block controlling organization 8 on workbench 5.
It is arranged on the wheel 2 below base 1, makes whole cooler more changing device to walk on the ground, can quickly move extremely
The side of cooler 6 to be replaced.When cooler more changing device is moved to the side of cooler 6 to be replaced, first pass through
Elevating mechanism 4 adjusts hoistable platform 3, the height of workbench 5, makes height and the cooler 6 times of the upper surface of workbench 5
Surface highly consistent, is connected contiguous block 7 with cooler 6 to be replaced；Again under the control of contiguous block controlling organization 8,
Contiguous block 7 moves on workbench 5, is dragged on workbench 5 by cooler 6；Finally move cooler more changing device, make position
Cooler 6 on workbench 5 arrives break bulk point, cooler 6 lifting is transported.
The installation process of new cooler 6, according to above-mentioned steps reverse execution, concretely comprises the following steps: first placed by cooler 6
On workbench 5, and cooler 6 is connected with contiguous block 7；Move to be installed to cooler 6 of cooler more changing device again
The side of position, adjusts hoistable platform 3, the height of workbench 5 by elevating mechanism 4, makes the height of the upper surface of workbench 5
Degree is highly consistent with the lower surface of the position to be installed of cooler 6；Last under the control of contiguous block controlling organization 8, connect
Block 7 moves on workbench 5, is pushed on the position to be installed of cooler 6 by cooler 6.
By using special cooler more changing device, can realize the replacing of cooler 6 quickly and efficiently, replacing options is simple
Easy, reduce device damage and the risk of personnel's injury.
As shown in Figure 1 to Figure 2, elevating mechanism 4 includes intersecting and two elevating levers hinged in cross point, each lifting
Two ends of bar are connected with hoistable platform 3, base 1 respectively, and the spacing between hoistable platform 3, base 1 is along with two liftings
The change of the angle between bar and change.
The one of elevating mechanism 4 more specifically embodiment is as follows.Elevating mechanism 4 includes cross one another first elevating lever 41 He
Second elevating lever 42, first elevating lever the 41, second elevating lever 42 is hinged by jointed shaft 43 in intersection；Hoistable platform 3
Lower surface be provided with the upper slide rails 44 vertical with jointed shaft 43, one end of the first elevating lever 41 is hinged with the upper surface of base 1,
The other end of the first elevating lever 41 slides in upper slide rails 44；The upper surface of base 1 is provided with the bottom vertical with jointed shaft 43
Slide rail 45, one end of the second elevating lever 42 is hinged with the lower surface of hoistable platform 3, and the other end of the second elevating lever 42 is in bottom
Slide in slide rail 45；Second elevating lever 42 is also hinged with one end of lifting hydraulic cylinder 46, the other end of lifting hydraulic cylinder 46 with
Transition block 47 is hinged, and transition block 47 is also enclosed within jointed shaft 43.
Wherein, the connection of lifting hydraulic cylinder 46 can be following scheme: the end and second of the cylinder body 461 of lifting hydraulic cylinder 46
Elevating lever 42 is hinged, and the end of the piston rod 462 of lifting hydraulic cylinder 46 is hinged with transition block 47.It is also possible to anti-mistake
Coming, the end of the piston rod 462 of lifting hydraulic cylinder 46 is hinged with the second elevating lever 42, and the cylinder body 461 of lifting hydraulic cylinder 46
End hinged with transition block 47.Above two installation method, has no effect on the realization of the function of whole elevating mechanism 4.So,
When the piston rod 462 of lifting hydraulic cylinder 46 stretches, angle between the second elevating lever 42 and the first elevating lever 41 can be driven
Change, thus drive the change of the spacing between hoistable platform 3, base 1.Second elevating lever 42 and the first elevating lever 41 it
Between the change of angle time, the end of the first elevating lever 41 slides in upper slide rails 44, the end of the second elevating lever 42 under
Slide in portion's slide rail 45.
Lifting hydraulic cylinder 46 is also not necessarily limited to hinged with the second elevating lever 42, it is possible to select hinged with the first elevating lever 41, or directly
Connect hinged with base 1 or hoistable platform 3.These mounting means all can realize stretching of the piston rod 462 by lifting hydraulic cylinder 46
Contracting, drives the function of the change of angle between the second elevating lever 42 and the first elevating lever 41.
As shown in Figure 1 to Figure 2, contiguous block controlling organization 8 includes the contiguous block guide rail being positioned at the upper surface of workbench 5, connects
Block 7 slides in contiguous block guide rail, at least screw mandrel 81 being also arranged above axis and contiguous block guide rail parallel of workbench 5,
Contiguous block 7 is enclosed within screw mandrel 81 and threadeds with screw mandrel 81, and screw mandrel 81 is connected with driving motor 82, drives motor 82 to carry
Movable wire bar 81 is rotated about axis.Drive motor 82 to drive screw mandrel 81 to be rotated about axis, make contiguous block 7 sliding in contiguous block guide rail
Dynamic, thus the cooler 6 being connected with contiguous block 7 is dragged on workbench 5.
Wherein, driving the drive shaft of motor 82 to be connected with reduction box 83, reduction box 83 is provided with the first sprocket wheel 84, and screw mandrel
The end of 81 is provided with the second sprocket wheel 85, is connected by chain 86 between the second sprocket wheel 85 with the first sprocket wheel 84.Drive motor 82
By reduction box the 83, first sprocket wheel 84, chain 86 and the second sprocket wheel 85, screw mandrel 81 is driven to be rotated about axis.
As shown in Figure 1 to Figure 2, it is additionally provided with between multiple wheels 2 for controlling the wheel control that wheel 2 advances, steps back and turns to
Mechanism 9 processed.This wheel controlling organization 9 includes an action bars 91, controls wheel 2 by this action bars 91 and advances, steps back and turn
To, thus control the movement of whole more changing device.This wheel controlling organization 9 is similar to the automobile steering system being typically seen,
This system is the most common in the design of automobile or other vehicles.
As shown in Figure 1 to Figure 2, workbench 5 is scalable, specifically includes the canned paragraph 51 fixing with hoistable platform 3 and can be along work
The telescopic section 52 that the bearing of trend of the upper surface of station 5 is flexible, telescopic section 52 under the driving of workbench hydraulic cylinder from canned paragraph
Stretch out in 51, or be retracted to the inside of canned paragraph 51.When the side that cooler more changing device is moved to cooler 6 to be replaced
Bian Hou, if workbench 5 still has a segment distance apart from cooler 6, can make the telescopic section 52 of workbench 5 to the side of cooler 6
To stretching out, until near cooler 6, making cooler 6 can successfully be dragged on workbench 5.
As shown in Figure 1 to Figure 2, more changing device also includes that connecting rod 10, one end of connecting rod 10 detachably connect with contiguous block 7
Connecing, the other end of connecting rod 10 removably connects with cooler 6.Connecting rod 10 is threaded connection with contiguous block 7, and connects
One end that extension bar 10 is connected with cooler 6 is provided with an adpting flange 101, this adpting flange 101 and the end method of cooler 6
Blue specification is identical.
As shown in Figure 1 to Figure 2, more changing device also includes at least one spike 11, and a spike 11 is fixed on the week of base 1
Limit, a spike 11 can extend downward ground under the driving of supporting cylinder 12.When cooler more changing device moves to regulation
Behind position, for ensureing the invariant position of cooler more changing device, a spike 11 can be made to stretch out earthward, make wheel 2 depart from ground,
Cooler more changing device is supported on the ground by a spike 11.
The method of the dismounting cooler 6 of above-mentioned furnace for brightness cooler more changing device, mainly comprises the steps that
1) operate wheel controlling organization 9 by action bars 91, cooler more changing device moved to cooler 6 to be replaced other,
As shown in Figure 3；
2) adjust hoistable platform 3, the height of workbench 5 by elevating mechanism 4, make the height of upper surface of workbench 5 with cold
But the lower surface of device 6 is highly consistent；If workbench 5 still has a segment distance apart from cooler 6, adjust the flexible of workbench 5
Section 52 extension elongation, make telescopic section 52 near cooler 6, as shown in Figure 4；
3) connecting rod 10 being connected on contiguous block 7 is connected with cooler 6；
4) under the control of contiguous block controlling organization 8, contiguous block 7 moves on workbench 5, and cooler 6 is dragged to workbench
On 5；If the length of cooler 6 is long, after cooler 6 is dragged on workbench 5, removes connecting rod 10, and use replacing
Cooler 6 is pulled to assigned position by the sprocket wheel that device carries；
5) move cooler more changing device, make the cooler 6 being positioned on workbench 5 arrive break bulk point, cooler 6 is lifted fortune
Walk.
Dismounting cooler 6 after, the installation method of new cooler 6, according to above-mentioned steps reverse execution, specifically include with
Lower step:
1) first cooler 6 is placed on workbench 5, and cooler 6 is connected with connecting rod 10 or contiguous block 7；
2) move cooler more changing device again to the side of the position to be installed of cooler 6, adjust lifting by elevating mechanism 4 flat
Platform 3, the height of workbench 5, make the height of the lower surface of the height of the upper surface of workbench 5 and the position to be installed of cooler 6
Degree is consistent；If workbench 5 still has a segment distance apart from cooler 6, adjust the extension elongation of the telescopic section 52 of workbench 5, make
Telescopic section 52 is near the position to be installed of cooler 6；
3) under the control of contiguous block controlling organization 8, contiguous block 7 moves on workbench 5, and cooler 6 is pushed into cooler
On the position to be installed of 6；
4) cooler 6 is fixedly mounted on position to be installed.
Above-mentioned furnace for brightness cooler replacing options, compares former manpower and adds jack, the mode pulled of working in coordination of driving a vehicle, we
Method effectively saves the upkeep operation time, is greatly saved human input, overall process only need 3 people just can, break away to driving and fasten
Hanging the dependence of jack, safety promotes further.
MCC Baosteel Technology Service Co., Ltd, changes in operation carrying out Baosteel precision tube factory 3# stove cooler, have employed this
Method, is tested, and removes 2 coolers only 4 hours used times, the most easily the time of 8～10 hours, greatly drops
Low time cost, has obtained the affirmative of owner.
In sum, this utility model furnace for brightness cooler more changing device, use special purpose device to change cooler, make cooler more
Changing operation and broken away from the use of driving, jack, operating personnel is greatly reduced, and safety increases substantially.So, this practicality
Novel effectively overcome various shortcoming of the prior art and have high industrial utilization.
Above-described embodiment only illustrative principle of the present utility model and effect thereof, not for limiting this utility model.Any
Above-described embodiment all can be modified under spirit and the scope of the present utility model or change by those skilled in the art.
Therefore, such as art has usually intellectual without departing from the spirit disclosed in this utility model with under technological thought
All equivalences completed are modified or change, and must be contained by claim of the present utility model.
Claims (8)
1. a furnace for brightness cooler more changing device, it is characterised in that: it includes base (1) and is arranged on described base (1) lower section
Multiple wheels (2), described base (1) is arranged over hoistable platform (3), described hoistable platform (3) and base (1)
Between be provided with elevating mechanism (4), described hoistable platform (3) by described elevating mechanism (4) control height, described liter
Being fixed with workbench (5) in fall platform (3), described workbench (5) is provided with the connection being connected with cooler (6)
Block (7), described contiguous block (7) is upper sliding at described workbench (5) under the control of described contiguous block controlling organization (8)
Dynamic.
Furnace for brightness cooler more changing device the most according to claim 1, it is characterised in that: described elevating mechanism (4) includes phase
Intersect mutually and two elevating levers hinged in cross point, two ends of described each elevating lever respectively with described hoistable platform
(3), base (1) connect, the spacing between described hoistable platform (3), base (1) is along with said two elevating lever
Between the change of angle and change.
Furnace for brightness cooler more changing device the most according to claim 1, it is characterised in that: described elevating mechanism (4) includes phase
The first elevating lever (41) intersected mutually and the second elevating lever (42), described first elevating lever (41), the second elevating lever (42)
Hinged by jointed shaft (43) in described intersection；The lower surface of described hoistable platform (3) is provided with and described jointed shaft
(43) vertical upper slide rails (44), one end of described first elevating lever (41) and the upper surface of described base (1)
Hinged, the other end of described first elevating lever (41) slides in described upper slide rails (44)；Described base (1)
Upper surface is provided with the lower slide rails (45) vertical with described jointed shaft (43), one end of described second elevating lever (42) with
The lower surface of described hoistable platform (3) is hinged, and the other end of described second elevating lever (42) is in described lower slide rails (45)
Interior slip；Described second elevating lever (42) is also hinged with one end of lifting hydraulic cylinder (46), described lifting hydraulic cylinder (46)
The other end hinged with transition block (47), described transition block (47) is also enclosed within described jointed shaft (43).
Furnace for brightness cooler more changing device the most according to claim 1, it is characterised in that: described contiguous block controlling organization (8)
Including the contiguous block guide rail of the upper surface being positioned at described workbench (5), described contiguous block (7) is in described contiguous block guide rail
Slide, at least screw mandrel (81) being also arranged above axis and described contiguous block guide rail parallel of described workbench (5),
Described contiguous block (7) is enclosed within described screw mandrel (81) and above and threadeds with described screw mandrel (81), described screw mandrel (81)
Being connected with driving motor (82), described driving motor (82) drives described screw mandrel (81) to be rotated about axis.
Furnace for brightness cooler more changing device the most according to claim 1, it is characterised in that: between the plurality of wheel (2) also
It is provided with for controlling the wheel controlling organization (9) that described wheel (2) advances, steps back and turns to.
Furnace for brightness cooler more changing device the most according to claim 1, it is characterised in that: described workbench (5) includes and institute
State the fixing canned paragraph (51) of hoistable platform (3) and can stretch along the bearing of trend of the upper surface of described workbench (5)
Telescopic section (52), described telescopic section (52) stretches out under the driving of workbench hydraulic cylinder in described canned paragraph (51),
Or it is retracted to the inside of described canned paragraph (51).
Furnace for brightness cooler more changing device the most according to claim 1, it is characterised in that: described more changing device also includes connecting rod
(10), one end of described connecting rod (10) removably connects with described contiguous block (7), described connecting rod (10) another
One end removably connects with described cooler (6).
Furnace for brightness cooler more changing device the most according to claim 1, it is characterised in that: described more changing device also includes at least one
Individual spike (11), described spike (11) is fixed on the periphery of described base (1), and described spike (11) exists
Ground can be extended downward under the driving of supporting cylinder (12).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620386905.1U CN205629844U (en) | 2016-04-29 | 2016-04-29 | Device is changed to furnace for brightness cooler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620386905.1U CN205629844U (en) | 2016-04-29 | 2016-04-29 | Device is changed to furnace for brightness cooler |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205629844U true CN205629844U (en) | 2016-10-12 |
Family
ID=57061271
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620386905.1U Active CN205629844U (en) | 2016-04-29 | 2016-04-29 | Device is changed to furnace for brightness cooler |
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| Country | Link |
|---|---|
| CN (1) | CN205629844U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107322252A (en) * | 2016-04-29 | 2017-11-07 | 中冶宝钢技术服务有限公司 | Furnace for brightness cooler more changing device and replacing options |
| CN107389046A (en) * | 2017-09-07 | 2017-11-24 | 沈阳化工股份有限公司 | For changing the frock of synthetic furnace lamp holder |
| CN108069374A (en) * | 2016-11-15 | 2018-05-25 | 中冶宝钢技术服务有限公司 | A kind of replacing furnace roller apparatus and method |
-
2016
- 2016-04-29 CN CN201620386905.1U patent/CN205629844U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107322252A (en) * | 2016-04-29 | 2017-11-07 | 中冶宝钢技术服务有限公司 | Furnace for brightness cooler more changing device and replacing options |
| CN108069374A (en) * | 2016-11-15 | 2018-05-25 | 中冶宝钢技术服务有限公司 | A kind of replacing furnace roller apparatus and method |
| CN108069374B (en) * | 2016-11-15 | 2019-12-13 | 中冶宝钢技术服务有限公司 | Furnace roller replacing device and method |
| CN107389046A (en) * | 2017-09-07 | 2017-11-24 | 沈阳化工股份有限公司 | For changing the frock of synthetic furnace lamp holder |
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